Voi-. III.] 



MINT FAMILY. 



high. Leaves 

 at the apex, 



i. Origanum vulgare L,. Wild Marjoram. 

 Organy. (Fig. 3*53- ) 



Origanum vulgare L- Sp. PI. 590. 1753- 



Perennial from nearly horizontal rootstocks, villous 

 or hirsute; stem erect, slender, i-2^ 

 ovate, petioled, obtuse or subacute 

 rounded or subcordate at the base, crenate or entire, 

 \'-\y 2 ' long, often with smaller ones, or short leafy 

 branches, in their axils; flower-clusters often 2 / broad; 

 bracts purplish, ovate or oval, about equalling the 

 nearly regularly 5-toothed calyx; corolla pink, purple 

 or nearly white, longer than the calyx, the upper lobe 

 broad; all four stamens, or the two longer, exserted. 



In fields and waste places, Ontario to New Jersey and 

 Pennsylvania. Naturalized from Europe. Native also of 

 Asia. Called also Organs, Pot Marjoram. July-Sept. 



31. KOELLIA Moench, Meth. 407. 1794. 

 [Brachystemon and Pycnanthemum Michx. Fl. Bor. Am. 2: 5, 7. 1803.] 

 Perennial erect, mostly branched, glabrous cinereous canescent or pubescent herbs, with 

 small white or purple-dotted flowers, in terminal or sometimes also axillary capitate glom- 

 erules or cymose clusters. Calyx ovoid, oblong or tubular, 10-13-nerved, equally or more or 

 less unequally 5-toothed, not villous in the throat, the 2 upper teeth sometimes united be- 

 low. Corolla 2-lipped, the upper lip emarginate or entire, the lower 3-cleft. Stamens 4, 

 didynamous, nearly equal, or the lower pair a little longer; anther-sacs parallel. Ovary 

 deeply 4-parted; style slender. Nutlets smooth, pubescent, or roughened. [Named for J. L. 

 C. Koelle, a German botanist of the eighteenth century.] 



About 14 species, natives of North America. Besides the following, i occurs in California and 

 1 or 2 in the southern States. The species apparently intergrade, and are thus difficult of discrimi- 

 nation. Mostly very fragrant. Sometimes called Basil, the proper name of Calaminth or Ocymum. 



& Leaves prevailingly linear, linear-lanceolate or oblong-lanceolate. 

 Calyx-teeth ovate-triangular, acute, one-fourth as long as the tube. 2. K. Virginiana. 



Calyx-teeth subulate, lance-subulate or bristle-tipped. 



Leaves linear or lanceolate; calyx-teeth subulate or lanceolate 

 Leaves linear or narrowly linear-lanceolate, entire. 

 Leaves lanceolate, entire, or usually serrate. 

 Bracts appressed, erect; clusters dense. 



Hirsute or pilose; leaves mainly entire. 3. 



Puberulent or glabrate; leaves mostly denticulate. 4. 



Bracts spreading; clusters loose. 5. 



Leaves oblong to linear-oblong, obtuse or subacute ; calyx-teeth awn-like. 6. K. hyssopifolia 

 & & Leaves prevailingly ovate, ovate-oblong or ovate-lanceolate. 

 Calyx-teeth bristle-tipped or subulate. 



Bracts appressed ; clusters dense; calyx-teeth bristle-pointed 

 Bracts spreading; clusters loose ; calyx-teeth subulate. 

 Calyx-teeth about one-half as long as the tube. 

 Calyx-teeth as long as the tube. 

 Calyx-teeth triangular, triangular-lanceolate or lanceolate. 

 Bracts spreading; clusters loose; calyx-teeth short. 

 Bracts appressed; clusters dense. 



Bracts canescent; leaves firm, acute. 11. 



Bracts ciliate or villous; leaves membranous, acuminate. 12. 



i. Koelliaflexuosa(Walt.) MacM. Narrow-leaved Mountain-Mint. (Fig. 3154.) 



Satureja Thymus Virginicus L. Mant. 2: 409. 1771. Not 



.S. Vitginica L. 1753- 

 Origanum fle.ruosum Walt. Fl. Car. 165. 1788. 

 Pycnanthemum linifolium Pursh, Fl. Am. Sept. 409, 1814. 

 Koellia flexuosa MacM. Met. Minn. 452. 1892. 



Stem slender, stiff, nearly glabrous throughout, Ij4~ 

 2)4 high. Leaves linear or linear-lanceolate, entire, 

 glabrous or the uppermost puberulent, sessile, or the 

 lower very short-petioled, i / -2 / long, yi f, -x% ,f wide, 

 rather firm, often with short leafy branches in their 

 axils; glomerules dense, terminal, cymose, 3 // ~5 // 

 broad, canescent; bracts appressed, acuminate, or subu- 

 late-tipped, not longer than the clusters; calyx cylin- 

 draceous, canescent, its teeth subulate and rigid, equal or 

 nearly so, 3-4 times longer than broad, about one-third 

 as long as the tube; corolla pubescent or nearly glabrous, 

 its tube longer than the calyx. 



In fields and thickets, Massachusetts to Florida, Ontario, 

 Minnesota and Texas. Little fragrant. July-Sept. 



1. A", flexuosa. 



K. pilosa. 



K. verticillata. 



K. clinopodioides. 



7. K. aristata. 



8. A", incana. 



9. K. pyenanthemoides. 



10. K. albescens. 



K. mutica. 

 K. montana. 





